/Engine/Source/Runtime/Engine/Classes/GameFramework/PlayerInput.h
Returns the list of keys mapped to the specified Action Name
const [TArray](API\Runtime\Core\Containers\TArray)< [FInputActionKeyMapping](API\Runtime\Engine\GameFramework\FInputActionKeyMapping) > & GetKeysForAction ( const [FName](API\Runtime\Core\UObject\FName) ActionName ) const